.container{
    .nav-left{
        height: calc(100vh);
        background-color: #001529;
    }
    .main{
        background-color: #f1f3f5;
    }
    .content{
        position: relative;
        padding: 5px;
    }
}

.main{
    height: 100vh;
    overflow-y: scroll;
}